diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 21 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_fence.c | 12 |
4 files changed, 28 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 885d33f341f3..99e4e044e958 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -2278,10 +2278,8 @@ static int vlv_resume_prepare(struct drm_i915_private *dev_priv, vlv_check_no_gt_access(dev_priv); - if (rpm_resume) { + if (rpm_resume) intel_init_clock_gating(dev); - i915_gem_restore_fences(dev); - } return ret; } @@ -2307,7 +2305,7 @@ static int intel_runtime_suspend(struct device *kdev) * We are safe here against re-faults, since the fault handler takes * an RPM reference. */ - i915_gem_release_all_mmaps(dev_priv); + i915_gem_runtime_suspend(dev_priv); intel_guc_suspend(dev); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index ad1a1fbc5864..dd3acabb7edb 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3130,9 +3130,10 @@ void i915_vma_destroy(struct i915_vma *vma); int i915_gem_object_unbind(struct drm_i915_gem_object *obj); int i915_gem_object_put_pages(struct drm_i915_gem_object *obj); -void i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv); void i915_gem_release_mmap(struct drm_i915_gem_object *obj); +void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv); + int __must_check i915_gem_object_get_pages(struct drm_i915_gem_object *obj); static inline int __sg_page_count(struct scatterlist *sg) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 38053434da8a..58d4ad2026ea 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1952,10 +1952,10 @@ out: intel_runtime_pm_put(i915); } -void -i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv) +void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv) { struct drm_i915_gem_object *obj, *on; + int i; /* * Only called during RPM suspend. All users of the userfault_list @@ -1970,6 +1970,23 @@ i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv) drm_vma_node_unmap(&obj->base.vma_node, obj->base.dev->anon_inode->i_mapping); } + + /* The fence will be lost when the device powers down. If any were + * in use by hardware (i.e. they are pinned), we should not be powering + * down! All other fences will be reacquired by the user upon waking. + */ + for (i = 0; i < dev_priv->num_fence_regs; i++) { + struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; + + if (WARN_ON(reg->pin_count)) + continue; + + if (!reg->vma) + continue; + + GEM_BUG_ON(!list_empty(®->vma->obj->userfault_link)); + reg->dirty = true; + } } /** diff --git a/drivers/gpu/drm/i915/i915_gem_fence.c b/drivers/gpu/drm/i915/i915_gem_fence.c index 67013179b8ed..3c5a8082cac3 100644 --- a/drivers/gpu/drm/i915/i915_gem_fence.c +++ b/drivers/gpu/drm/i915/i915_gem_fence.c @@ -343,6 +343,9 @@ i915_vma_get_fence(struct i915_vma *vma) struct drm_i915_fence_reg *fence; struct i915_vma *set = i915_gem_object_is_tiled(vma->obj) ? vma : NULL; + /* Note that we revoke fences on runtime suspend. Therefore the user + * must keep the device awake whilst using the fence. + */ assert_rpm_wakelock_held(to_i915(vma->vm->dev)); /* Just update our place in the LRU if our fence is getting reused. */ @@ -368,19 +371,14 @@ i915_vma_get_fence(struct i915_vma *vma) * @dev: DRM device * * Restore the hw fence state to match the software tracking again, to be called - * after a gpu reset and on resume. + * after a gpu reset and on resume. Note that on runtime suspend we only cancel + * the fences, to be reacquired by the user later. */ void i915_gem_restore_fences(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); int i; - /* Note that this may be called outside of struct_mutex, by - * runtime suspend/resume. The barrier we require is enforced by - * rpm itself - all access to fences/GTT are only within an rpm - * wakeref, and to acquire that wakeref you must pass through here. - */ - for (i = 0; i < dev_priv->num_fence_regs; i++) { struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; struct i915_vma *vma = reg->vma; |
